Monography
n. 专论
🗣️ 情景例句
Are the people friendly in China?
中国的人们友好吗？
When did you find this book?
你什么时候找到这本书的？
Oxygen is widely used in ship repairs for cutting and joining metal plates or pipes.
在船舶修理过程中，常常使用氧气切割和焊接金属板或金属管。